Hiya!
Yeah, reading it...that's just sad. I'd rename it to something like "Phantasmal Head-Ache with a Side-Order of Possible Pants Wetting". What I'll probably make the save, round to round; success, you take no damage and aren't Frightened...fail and you take damage and are Frightened.
I'll also add in that if a natural 1 is rolled on a save, the character just dies on the spot. If he fails by more than 5, the character instantly drops into a fetal position and marks off one of his "failed Death Save" circles. After that, his 'saves' become Death Saves (he doesn't take any more 'phychic damage', but is still Frightened, also Prone, and can't do anything other than drool, gibber and eat grass). If he fills up his Death Save circles, he dies of fright. If he fills up his 'Life Save' circles, he conquers his fears and is now immune to the spell for it's duration.
So...dangerous, yes. Potentially deadly, yes. Worthy of 4th level? I think so.
^_^
Paul L. Ming


Isn't a save in 5e just an ability roll?
"To make an Ability Check roll a d20 and add the relevant ability modifier." p.174
"To make a saving throw, roll a d20 and add the appropriate ability modifier." p. 179
The difference is, I suppose, an ability check is something that can be asked by the DM or you can try to do on your own. While a "saving throw", which is still using an ability to accomplish [overcome] something, is called out as "you don't normally decide to make."
It's another element of vague wording/DM's call. I would say it makes sense that frightened condition does effect them, as "saves" are simply a subset of "ability checks"...which you make with disadvantage while frightened.![]()

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.